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187653 (2007 EN31)
Classification: Outer Main-belt Asteroid          SPK-ID: 2187653
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04845176649013422 4.8991e-08  
a 3.233400602192379 3.2845e-08 au
q 3.076736631245894 1.6886e-07 au
i 3.977036023741633 4.7672e-06 deg
node 107.7874036334372 7.3689e-05 deg
peri 297.0712264020655 9.6332e-05 deg
M 237.2181167815567 6.7391e-05 deg
tp 2459924.801673543384
(2022-Dec-11.30167354)
0.00040353 TDB
period 2123.673262216675
5.81
3.2358e-05
8.859e-08
d
yr
n .1695176025450519 2.5829e-09 deg/d
Q 3.390064573138863 3.4436e-08 au
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      9270 days (25.38 yr)  
   first obs. used      1995-02-06  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54225  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 13:53:18  

Additional Information
 Earth MOID = 2.08762 au 
 Jupiter MOID = 1.83313 au 
 T_jup = 3.180 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.53   n/a E2021B55  
diameter diameter 4.733 km 0.648 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187653 (2007 EN31)          Discovered 2007-Mar-10 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 2007 EN31 = 1996 GN13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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